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Finding the Fourth Proportional to 65,891.76, 98,854.08 and 21,521.04

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Solution

The fourth proportional to 65,891.76, 98,854.08 and 21,521.04 is: 32,286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,891.76 : 98,854.08 = 21,521.04 : x
  2. Step 2: Convert to fraction form
    65,891.76/98,854.08 = 21,521.04/x
  3. Step 3: Cross multiply
    65,891.76x = 98,854.08 × 21,521.04
  4. Step 4: Simplify right side
    65,891.76x = 2,127,442,609.84
  5. Step 5: Solve for x
    x = 2,127,442,609.84/65,891.76
  6. Step 6: Final answer
    x = 32,286.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.